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Updated: Apr 26, 2026

Integration of Bioinformatics Approaches and Experimental Validations to Understand the Role of Notch Signaling in Ovarian Cancer
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NOTCH1, NOTCH3, NOTCH4, and JAG2 protein levels in human endometrial cancer

Aušra Sasnauskienė1, Violeta Jonušienė1, Aurelija Krikštaponienė2

  • 1Department of Biochemistry and Molecular Biology, Faculty of Natural Sciences, Vilnius University, Vilnius, Lithuania.

Medicina (Kaunas, Lithuania)
|July 26, 2014
PubMed
Abstract

Insights

In endometrial cancer, Notch signaling proteins NOTCH4 and JAG2 were found at lower levels, suggesting a tumor-suppressive role for this pathway and indicating potential therapeutic targets.

Area of Science:

  • Cellular signaling pathways
  • Cancer biology
  • Molecular oncology

Background:

  • Notch signaling is crucial for cell development and is implicated in various cancers.
  • Deregulation of the Notch pathway is linked to carcinogenesis.

Purpose of the Study:

  • To investigate the protein levels of Notch signaling pathway components (NOTCH1, 3, 4, and JAG2) in human endometrial cancer.
  • To determine the role of Notch signaling in endometrial carcinogenesis.

Main Methods:

  • Western blot analysis was used to quantify protein levels.
  • Samples included stage I endometrial cancer and adjacent non-tumor tissues from 22 patients.

Main Results:

  • NOTCH4 receptor levels were 1.7 times lower in endometrial cancer tissues (P=0.04).
  • JAG2 ligand levels were significantly reduced by 2.5 times in stage IB adenocarcinoma (P=0.01).
  • No significant changes were observed for NOTCH1 and NOTCH3 receptors.

Conclusions:

  • Reduced NOTCH4 and JAG2 protein levels suggest a tumor-suppressive role for the Notch pathway in endometrial cancer.
  • These findings highlight Notch pathway activation as a potential therapeutic strategy for endometrial cancer.
Keywords:
AdenocarcinomaEndometrial cancerNotch signaling proteins

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